#include <iostream>
#include <cstdlib>
#include <unistd.h>
#include <strings.h>
#include <string.h>
// #include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <pthread.h>
#include "Terminal.hpp"

// using namespace std;

void Usage(std::string proc){
    std::cout<<"\n\rUsage: "<<proc<<" serverip serverport\n"
    <<std::endl;

    
}

struct ThreadData{ //
    struct sockaddr_in server;
    int sockfd;
    std::string serverip;
};

void *recv_message(void *args){
    // openTerminal();
    ThreadData *td = static_cast<ThreadData *>(args);
    char buffer[1024];
    while(true){
        memset(buffer,0,sizeof(buffer));
        struct  sockaddr_in temp;
        socklen_t len = sizeof(temp);
        
        ssize_t s=recvfrom(td->sockfd,buffer,1023,0,(struct sockaddr *)&temp,&len);
        if(s>0){
            buffer[s]=0;
            std::cerr<< buffer<<std::endl;
        }
    }
}

void *send_message(void *args){
    ThreadData *td = static_cast<ThreadData *>(args);
    std::string message;
    socklen_t len = sizeof(td->server);
    
    std::string welcome = td->serverip; 
    welcome +=" comming...";
    sendto(td->sockfd,welcome.c_str(),welcome.size(),0,(struct sockaddr *)&(td->server),len);
    
    while(true){
        std::cout<<"please Enter@ ";
        getline(std::cin,message);

        sendto(td->sockfd,message.c_str(),message.size(),0,(struct sockaddr *)&(td->server),len);
    }
}


int main(int argc, char *argv[]){
    if(argc != 3){
        Usage(argv[0]);
        exit(0);
    }
    std::string serverip = argv[1];
    uint16_t serverport = std::stoi(argv[2]);
    
    struct ThreadData td;
    bzero(&td.server,sizeof(td.server));
    td.server.sin_family = AF_INET;
    td.server.sin_port = htons(serverport);
    td.server.sin_addr.s_addr = inet_addr(serverip.c_str());
    
    td.sockfd = socket(AF_INET,SOCK_DGRAM,0);//创建套接字
    if(td.sockfd<0){
        std::cout<<"socker error"<<std::endl;
        return 1;
    }
    td.serverip = serverip;
    
    pthread_t recvr, sender;
    pthread_create(&recvr,nullptr,recv_message,&td);
    pthread_create(&sender,nullptr,send_message,&td);
    
    pthread_join(recvr,nullptr);
    pthread_join(sender,nullptr);

    close(td.sockfd);
    return 0;
}   

